This paper refers to an experiment of SO2 absorption to the three different sorbents: calcium–oxide (CaO), calcium–carbonate (CaCO3 ) and dolomite (CaMg(CO3 )2 ). In the reactor under the condition of oxidation atmosphere with the mass of sorbent (sample) of 100 g with fractional composition of 500–700µm, the gas temperature varied from 200°C and 400°C. The examinations indicated that the highest degree of sorbent utilization of 14 % was determined for dolomite (CaMg(CO3 )2 ) and the binding degree of SO2 from 65–80% and the lowest for calcium oxide of 4% and the binding degree of SO2 from 34–60% at the reaction temperature of 200°C. When the reaction temperature is 400°C the degree of sorbent utilization is a bit lower. The achieved results indicate the injection capability of powdered sorbents CaMg(CO3 )2, CaCO3 and CaO in the areas of lower temperatures as it is the convective part of the boiler or furnace flue of the thermo power plant.

A carbonaceous sorbent derived from an Iranian walnut shell (WS) were prepared by chemical activation method using ZnCl2 as an activating reagent. WS may be used in water treatment to remove mercury (Hg++) from water. The adsorption of mercury ion...

The presence of heavy metals in the environment is of important concern due to their toxicity and health effects on human and other living creatures. Cobalt is one of the usual toxic heavy metal present in the waste water of nuclear power plants and...

A wide range of methods has been developed for the removalof cadmium from waters and wastewaters to decrease their impact on the environment, but the removal of cadmium from water and waste water is stilla recurring challenge,especially in developing...

Modified multi walled carbon nanotubes were used as a solid sorbent for separation and preconcentration trace amounts of Au (III) ions. The sorption of Au3+ ions was quantitative in pH range of 2.0–5.0, whereas quantitative desorption occurs...